Apparatus for purifying water.



PATENTED JUNE 9, 1908. HAREISERT. APPARATUS FOR PURIFYING WATER.

APPLICATION FILED MAY 12,1906.

4 SHEETS-SHEET 1.

' INYENTOR %'4 arm/mt) No. 890,301. 7 PATENTED JUNE 9, 1908. H. REISERT.

APPARATUS FOR PURIPYING WATER.

APPLICATION PILED MAY 12,1906.

4 SHEEfIS-SHEET 2.

INVENTOR W/ T/VE $51515 No. 890,301 A PATENTED JUNE 9, 1908. H. REISERT.

APPARATUS FOR PURIFYING WATER.

APPLICATION FILED MAYIZ, 1906.

4 SHEETS-SHEET 3.

wflaw, B I

WITNESSES fipw/ NTOH No. 890,801. PATEN'IED JUNE 9, 1908. H. REISERT.

APPARATUS FOR PURIPYING WATER.

APPLICATION FILED MAY 12,1906.

4 SHEETS-SHEET 4.

WITNESSES M I By gigqmwm ATTORNEY UNITED STATES PATENT OFFICE.

HANS REISERT, OF COLOGNE, GERMANY, ASSIGNOR TO HANS REISERT COMPANY, A CORPORATION OF GERMANY.

APPARATUS FOR PURIFYING WATER.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed May 12, 1906. Serial No. 316,429.

To all whom it may concern:

Be it known that I, HANS REIsERT, a citi I for Purifying Water, of which the following is a Specification.

My invention relates to an apparatus for purifying water and in particular to an apparatus by. means of which water may be purified and filtered by use of a suitable reagentjsuch as baryta and in which the filter may be quickly and effectively washed out in a minimum amount of time.

One object of my invention is to provide an apparatus for purifying water in which a baryta bath is utilized, the bath being subdivided into a plurality of layers and a separate stream of water being supplied to each of said layers.

Another object of my invention is to regulate the discharge of one or more of the streams of water passing through the baryta layers, and to filter the discharged water.

Another object of my invention is to supply the water to be purified to the apparatus by means of a siphon, at the same time preventing the intake of air into the apparatus through the action of the siphon.

With the above and other objects in view, my invention consists in the improvements, parts and combinations more particularly set out in the claims.

Referring now to the drawings attached to this specification and forming a part thereof, Figure 1 is a vertical cross-section of my improved apparatus that illustrates also one mode in which my process may be carried intoeflect. Fig. 2 is a detail view of a portion of Fig. 1. Fig. 3 is a view of a partof the siphon mechanism. Fig. 4 is a view of a modification. Fig. 5 is a detail view illustrating the apparatus used to regulate the discharge of the water to the filter. Fig. 6 is a top view of Fig. 5. Fig. 7 illustrates another form of my invention. Fig. 8 is a detail view of the wash-out apparatus shown out apparatus shown in Fig. 4.

The water to .be purified enters the apparatus through the pipe 1 and inlet 2. A

' valve controlled by afloat 3 automatically preserves the level of the water in the tank4. rom the tank 4 the water flows through an adjustable valve 5 into a supply chamber 6.

Fig. 9 is a detail view of the washsupply chamber 6 and feed it to the purifying apparatus. The vessel 9 is secured to the plpe 7 by straps 10, the vessel 9 being kept u l of Water so as to seal the pi e 7 and pre venting the direct discharge 0 water from the pi e7 into the pipe 11. a An air chamber 12' wit an air outlet 13 is provided between the siphon and the feed pipe 11. When the level of the water in the su ply chamber 6 rises above the upper end 0 the pipe 7 the siphon 7, 8 starts 1nto action and the water in the supply chamber 6 is rapidly removed therefrom and discharged, into the air chamber 12, from which it flows by means of'the pipe 11 into the lower portion of the reaction tank 14. By the provision of an intermediate air chamber between the siphon and the feed 'pipe 11, I avoid dragging air with the feed Water into the reaction tank 14. The reac tion tank 14 is preferably rovided with a conical lower ortion 15, an means, such as the supply fuel purify the water.

In the best embodiment of my invention I make use of baryta as one of the reagents utilized in the reaction tank and supply the. .baryta to the tank through the funnel 16.

The baryta enters the tank and distributes itself in the form of a powder held in suspension by the water in a plurality of layers through the tank. By reason of the intermittent and impulsive su ply of water in the tank throu hpi e 11, thefiaryta is stirred and revented i' rom orming a compact hard body, ut is instead kept in the form of a powder distributed throughout the water in the tank. To further insure the stirring of the baryta at the bottom of the tank and to prevent it forming a solid mass that would stop the feed ipe 11, I provide one or more cone shaped deflectors 17 located at the bottom of the tank. The water after assing out of the pipe 11 is sent toward t e outside walls of the tank. and in consequence thereof the water is caused to circulate in contact with the baryta in eddies between the deflectors and the walls of the tank.

In accordance with my invention, I pro- 16, are used to supply the reaction tank with a reagent that is usedto 45 the water fr" in the chamber 19 to the'filte in the tank and the upwardly flowing stream of water coming from the feed pipe 1 1 will be divided, one portion passing into the decanting chamber '18 through its mouth, another into the decanting chamber 19, and another portion into theuppermost decanting chainer- 20.v The number of these decanting '5 chambers and their arrangement with re-' spectto the walls be. widely varied. i

accord "ce with the apparatus illus? trated upon the drawings,- I have soarranged the decanting chamber 18 that about onethird ,of the water: to be. purified-passes through'this chamber, and two-thirds of the of the reaction tank may Water tobe purified passes between the walls p t61' to be purifiedenters slowly into the decanting chambers and the-reaction with'the of the decanting chamber 18'and' the wall'21 5 of the reactiontank. This'is accomplished b suitably proportionin the cross-sections ozthe' entrance to .the decanting chamber and the cross-section for the passage for the water flowing between the decanting'c'hamber and the wall 21 and b regulatingthe .flow of Water -b means of rhs I That portion oi the water which passes up-'-' wardly throu h the reaction tank 14,1 is again sub-divi ed' by the decanting chamber 19 ,into twostreams, one portionof which passes into the decanting 'chamberl and another portion passes into the decanting "chamber 20 throu h the assages between the chamber. 19 an the wa I 21. The'wat'er' which passes from the decanting chamber 20 "reaches the filter bed 2 3'throu'gh the passa es 122. The discharge pi pel24 discharges -t e water from the-decantmg chamber 18 to: the filter bed and'a discharge pipe 25-.discharges;

bed '23;- asuitahle means are' provided for regulating;the"d1schar' e; YAssh Wn' in Fi s. .5 andfi have provi ed; the' mo'uth oft e pipe 24 with-a valve326 -wh'ich is, pivoted at 5 27 so .that'the degree of the oigemng of the 'dischargeof the pipe 24 may e regulated. The e 251's providedwith apair ofplates 28' an 29, :-p 1rovided with slots .30 engagin bolts '31 sot attheplates,beseparated 5 to vary thefdgree- Jof the' opening. of, the. mouth of the. pipe. 25- and thus regulate the-- 'dischar It beobserved that by dividing'th'e upwardly flowing stream ofwater in the-tank 14;

[be varied. In Fig; -1 I- have illustrated a into, a plurality of-streams and regulating the dischargeof oneo'r more of the streams,

- that the flow for} the velocity of the ,stream may he decre'asedjthus .permittin .theim purities to settle-morereadily-an so. that 5' onger'timeis therebygiven to the water in charge valves.

which to react with the baryta and in which to, throw down the impurities. I have found that the specific gravity of the water columns in the reaction tank 14 varies at difierent oints in the tank. The Water columnbeow the decanting chamber 20 is the heaviest and has the greatest s ecific lravity and the water under the decan ingc amber 19 has less s ecific gravity, whereas the water under the d canting chamber 18 has the least sp'ecific gravity. By means [of the regulating means 26' and.28 I am enabled, however, to

iadjustthe discharge of the'water to the right v HeEht and degree. 7 ach stream of water enters its wire 30 sponding decanting chamber 18, 19 through a settling basin having a large cross-section, 1 which is cylindrical in thefcase of the chamber 18 and maybe annula'r'as shown inconnection with the chamber 19. The upper portion of each of these chambers constitutes 'a clarifier and narrows in cross-section or taers. Bymeans of this construction the Wabaryta occurs slowly and effectively. g Clarified water mixed with such impurities asstillremain passesup the discharge pi es and- :minimum quan'tityof wash water, the filtering operation is. interru tedfor the-minimum amount of time an the capacity of the 1 5 filter is thereby increased. Moreover, by the sudden-j flow of a large amount of'water through the filter bed the. entire bed is kept 'in'sus ension fora short time-arid the mud partic es can readily free themselves from the material of the filter. In order to accomthese results, .-it is" desirable to-have' arge' passages-of ample dimensions, preferv ably as short aspo'ssible, between the storage reservoir andthe filter bed, and the assages should be so arranged as'to distri ute the wash water uniformlgthroughout the bed and permit quick an impulsive action. It. is furthermore desirable toJprovide an ample esca e forthe'wash water and not to retard 1 0 the. ischarge of thewash water by means of t narrow passages, which prevent a quick and effective wash-out.

The form of my washeo'ut apparatus may 12% wash-out" reservoir 34, which communicates with the .purified water beneath-the filter bed :by' meanaof-Jalarge wide. tube 35. The means'for-filling thetank, in the form of the inventionshown'in Fig. 1, comprises a pipe 36 through which flows 'a stream of water or stream in the.pipe 36. A valve 39 at the top of the tank, when opened, admits air to the tank 34, which breaks the vacuum and the wash-out water descends through the tube 35 upwardly through the filter 23, and dis- 0 arges over the sides of the filter chamber 40. Any bartya carried over by the washout is thereby returned to the decanting reservoir 14. Before dischar ing the wash water from the filter, it is esirable to make room for it, and to promote a free discharge, by drawing ofi? some of the water in the reaction tank so as to leave a s ace below the to of the filter chamber 40. or this purpose make use of a ipe 40 controlled by a valve 40 so that wli water may be drawn from the top of the tank 14 lowering the water level in the tank.

In the form of the invention illustrated in Fig. 2, a partial vacuum is produced in the top of the reservoir 41 by means of steam introduced through pi e 42, the supply of which can be shut of? by the sto cook 43, and air valve 44 may be used to a mit air to the reservoir and break the vacuum. The steam entering through the pipe 42, will first ex el the steam through the stop cook 44, the Patter being opened and then after the closing of the stop cocks 44 and 43 the steam will condense and the water will rise in the tank 41. By opening the air valve 44 the water may be discharged with a sudden rush upwardly through the filter bed.

In Fig. 4 instead of using filtered water I may supply raw wash-out water through the pipe 45. The tank 46 is filled through the pipe 45, and a valve 47 operated by a valve rod 48, lever 49 and hand rod 50, may be used to supply the water to the filter bed duringthe wash-out operation.

I have illustrated in Fig. 8, in somewhat greater detail, the wash-out a aratus also shown in Fig. 1. As shown in t s figure, the filter bed rests upon a grating 51, a great many large, coarse stones 52 forming the bottom of. the filter bed, which is surmounted by ala yer of sand 53, the purified water escaping throu h the pipe 32. The wash water containe in reservoir 34 may be suddenly allowedto drop through the tube 35, and thus discharge upward y through the filter bed. The water in the pipe 36 pro duces a partial vacuum in the top .of the reservoir 34, which is utilized to raise the water into the tank 34 when desired.

In Fig. 9 the form of wash-out apparatus,

also shown in Fig. 4, is shown in greater de-' tail. The pi e 54 su lies the wash-out water to the tank. 46. e level of the water in the tank is automatically controlled through a' float 55 that closes a valve in the valve box 56, and thus shuts the pipe 54 when the water en the said valve is opened,

has reachedthe desired level. The filter bed rests upon the grating 57. Large orifices 59 communicate between the tube 60 and the bottom of the filter bed. Ordinarily the water to be purified passes downwardly through the filter and outwardly through the discharge pipe 32, after it has been purified. A valve 52 1s located in said discharge pipe, so-that the discharge pipe may be closed during the washing out operation. By means of handles 50 and 61 the valve 52.and valve 47 may be simultaneously operated. The

valve'47 will be opened when the valve 52 is closed, and vice versa'.

Referring now to Fig. 1, suitable meansare provided for supplying lime water to the reaction tank. For this purpose a conical vessel 62 is rovided for the pur ose of producing a cl arified solution of ime water. Raw water enters this vessel from the pipe 63 controlled by the valve 64, the said pipe leading to a long pipe 65 that discharges at the bottom of the vessel. This produces an u wardly flowing stream of water in the vesse 62. Lime Water is sup lied to the vessel from a tank 66 containing iime, as shown at the bottom of said tank, to which tank water is supplied from the pi e 1 and valve 67.

Lime is ,drawn ofl' throug the bottom of the v are not utilized. In this figure, water to be purified is supplied through the pi e 74 to the tank 75, theinletbeing controlle through a float 76 controlling an inlet valve. Branch pipes 77 and 78 lead to the lime mixing tank 79 and lime saturator 80 respectively. Pipe 78 is connected with the pipe 81 which runs to the bottom of the saturator. Lime water is taken from the tank 79 through pipe 82 and funnel 83. The clarified solution of lime water passes out at 84 through pipe 85 to the bottomof the reagent chamber 86. Raw

. water to be purified enters thetank 87 and is supplied through the siphon 88 having a bell 89 to the air chamber 90. A vesselv 91 seals the bottom of the siphon 88. An air esca e pipe 92 permits the air in to escape to t e atmosphere. The pipe 93 intermittently supplies water to'be purified to the bottom of t e reaction tank 86, and deflecting plates 94 and 95 spread the water and distribute it through the reagent in the tank so as to mix the reagent solution with the inflowing water. The treated water passes upwardly through the tank 86 and upwardly through the wood shavings filter 96 and out through the pi 97. A discharge pipe 98 in which is located valve 99, controlled by'the rod 100, may be used to Withdraw water from the bottom of the filter bed, and thus permit clarified water to ass through the filter bed and wash out the ter. The reaction tank 86 may be discharged through the pipe 101.

Having thus described my invention,what I claim and desire to secure by Letters Patent, is: v

1. In an a paratus for purifying water, the combination of a vertical tank, means for maintaining a plurality of layers of baryta in said tank, means for supplying Water to be purified to the bottom of said tank, and means for sub-dividing the stream of water supplied to the tank whereby each stream passes through its associated layer.

2. An a paratus for purifying water by means of baryta, comprising in combination a vertical tank, means for supplying water to be purified to the bottom ofsaid tank, means'for maintaining a plurality of layers of baryta in said tank, means for subdividing the water fed to said tank into a plurality of streams, means for passing each stream through its associated baryta layer, means for discharging each of said streams of water after treatment with baryta, and means "for regulating the discharge of .one or more of said streams.

-3. An apparatus for purifying water by meansof bar ta, comprising 1n combination a vertical tan means for suppl ing water to be purified to the bottom of sai tank, means for maintaining a plurality of layers of baryta in said tank, means for sub-dividing the water fed to said tank into a plurality of streams, means for passing each stream through its associated baryta layer, means for discharging each of said streams of water ,to a common filter, means for regulating the discharge of one or more of said streams, and

means for filtering the water so discharged. 4. In a water purifying apparatus, the combination of a reaction tank, means for sifipplyinga reagent to said tank, a lurality combination of a vertical tan ecanting chambers located wit in said tank, and means mdependent of said rea ent su lying means for su plying toeac of siagi chambers a part of t e water to be puri- 5. In awater purifying apparatus, the

adapted to containa plurality of layers of a reagent, a plurality of decanting chambers located within said tank, and means for separately supplying to each of said chambers a part of the water to be purified.

6. In a water purifying apparatus, the

, combination of a reaction tank adapted to contain a suitable reagent, a pluralityof decanting chambers located within said tank,

one/above the other, one or more of said arately supplying a part of the water to e purified to each of said decanting chambers. 8. In a water purifying apparatus, the

ivided w1th a settling combination of a reaction tank,,means for suppl ing a suitable reagent tosaid tank, a

plura ty of decanting chambers located within said tank, one or. more of said chambers being provided with. a cylindrical settling basin, and a clarifying portion having a narrowing cross-section, a discharge pipe for one or more of said decanting chambers, and means for supplying a art'of the water" to be purified to each 0' said decanting chambers.

9. In a water purifying ap aratus, the combination of a reaction tanli means for supplying a suitable reagent to said tank, a plurality of decanting chambers located within said tank, one or more of said chambers being provided with a cylindrical settling basin, and a clarifying portion having a narrowing cross-section, a discharge pipe for'one or more of said decanting'chambers, means for regulating the discharge of water through said pipe, and means for supplying a part of the water to be purified to each-of said decanting chambers.

10. In an apparatus for purifying water, the combination of a reactlon tank, a feed pipe, a supply-chamber, an air chamber between. sai supply chamber andv said pipe, and means .for intermittently supplying the water from said supply chamber to said air chamber.

11. In an apparatus for purifying water, the combination of a reaction tank, a feed pipe, a sup tween sai supply chamber and said-p1 e, and a siphon for intermittently supplym t e water from said supply chamber to sai air chamber. 1

12. In an apparatus for purifying, water, the combination of a reaction tank, a feed pipe, a su ply chamber,'an air chamberbetween sai supply chamber and said pipe an air'vent for said air chambenand a sipr on for intermittently supplyin the water om said su ply chamber to sai air chamber.

13.. 11 an apparatus for purifying water, the combination of a reaction tank, a reservoir adapted to contain a storage supply of wash-Water, a filter inside of said reaction tank and passages-of ampledimensions beply chamber, an air chamber between the reservoir and the filter bed, so arranged as todistribute the wash-water throughout the filterbed, and means for of decant' forcing the wash-water through the filter bed by a uick impulsive action.

I 14. 11 an apparatus for purifying water, the combination of a reaction tank, a filter bed inside of said reaction tank, a reservoir for supplying wash-water for washing out the ter, passages of ample dimensions between the reservoir and the filter bed so arranged as to distribute the Wash-water uniformly throughout 'the bed, means for sup lying wash-water throughout the filter bed by a quick impulsive action, and means for directing the wash-water in the reverse direction t rough the filter bed from that taken by the water in the filtering operation.

15. In a water purifying apparatus, the combination of a reaction tank, a filter bed inside of said reaction tank, a reservoir adapted to contain wash Water located above. said filter bed, passages of ample dimensions between the reservoir and filter bed so arra ed as to distribute wash-water uniformly t oughout the bed, passages of ample cross-section to deliver the water from the filter bed without retarding the flow of the wash-out water, and means for supplying filtered water to said reservoir.

16. In a water purifying a paratus, the combination of a reaction tan a filter bed inside of said reaction tank, a reservoir adapted to contain wash-Water located above said filter bed, passages of ample dimensions between the reservoir and filter bed so arra ed as to distribute wash-water uniformly t oughout the bed, passages of am .ple cross-section to deliver the water from the filter bed without retarding the flow of.

the wash-out water, and means for producing a partial vacuum in said reservoir so as; to draw a supply of filtered water into said res ervoir from said filter bed.

17. In a water. purifying apparatus, the

combination of a reactlon tank, means for su ly' a rea ent to said tank, a luralit pp mg cha mbers each provided with ail open mout and each located within said tank and means independent of said reagent supplying means for supplying to each of tan ers located within said tank, one or more of v said chambers being so arranged with respect to the walls of the reaction .tank as to permit the passage of Water between the chamber and the tank, and means for separately supplying to each-of said chambers a part only of the raw water which enters the reaction tank.

19. In a water purifying a paratus, the combination of a reaction tan a reservoir adapted to contain a storage supply of washwater, a filter, passages of amp e dimensions between the reservoir and the filter bed so arranged as to distribute the wash water through the filter bed, means for forcing the wash-Water through the filter bed by a quick impulsive action, said filter bed being arranged inside of said reaction tank and ada ted to receive water from the reaction' if during the filtering operation and to discharge water into the reaction tank while the wash-water is being forced through the filter bed.

20. In a water purifying apparatus, the combination of a reaction tan a reservoir adapted to contain a storage supply of washwater, a filter bed, passages of ample dimensions between the reservoir and the filter bed, passages between the filter bed and the walls of the reaction tank, means for forcing washwater through the filter bed by a quick impulsive action, the parts being so arranged that water may be discharged from the reaction tank into the filter bed during the filtering operation and the wash-water may be discharged from the filter bed into the reactiontank during the washing operation.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

HANS REISERT. 

